Structure and properties of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

Huang, Wanzhen; Shen, Hua; Xu, Guangbiao

doi:10.1088/2053-1591/ab5cba

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…TG studies of PTFE were performed by a number of experimental groups. − According to these studies, the weight of monolithic PTFE samples does not change by heating up to 450 °C. PTFE begins to decompose into monomers when heated to a temperature of about 467 °C in an inert atmosphere .…”

Section: Resultsmentioning

confidence: 99%

Features and Consequences of Isopropanol Burning off PTFE–rGO Aerogels

et al. 2021

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An improved procedure for the preparation of aerogel granules of polytetrafluoroethylene–graphene oxide (PTFE–GO) with a composition of 50:50 (in wt %) and a specific density of 35 ± 2 mg/cm3 is described. The technique practically excludes the granule cracking. The specific density of the pellets after reduction using hydrazine vapor and annealing at 370 °C decreased to 29 ± 2 mg/cm3. The PTFE–reduced GO (rGO) pellets obtained were tested as a recyclable sorbent for isopropyl alcohol (IPA) in sorption/combustion cycles. It has been shown that the aerogel sorption capacity for IPA increases from 35.6 to 39.3 g/g as a result of alcohol burning off. During the combustion of IPA, the temperature of an individual pellet can exceed 300 °C. When several contingent pellets are burned, the temperature of their heating increases. The fine-pored structure of the near-surface layer of the granule is destroyed during the alcohol burning, the internal structure with larger pores is exposed, and the relative proportion of PTFE on the surface of the granules decreases. It was also shown that the specific surface area of PTFE–rGO increases from 26 to 49 m2/g during cycling.

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Section: Resultsmentioning

confidence: 99%

Features and Consequences of Isopropanol Burning off PTFE–rGO Aerogels

et al. 2021

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confidence: 99%

“…Through the actual inspection, it can be found that PTFE sewing thread has a transverse cutting effect on the filter materials; this is because the surface of PTFE sewing thread is very smooth. 34 And the phenomenon of thermal creep of PTFE sewing thread has often occurred under the action of heat. [35][36][37][38] A modified PPS (MPPS) and PTFE sewing thread (referred to as MPPS/PTFE sewing thread) has been prepared to make up for the above defects of PTFE sewing thread.…”

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confidence: 99%

Influence of sulfuric acid solution on the durability of high-performance modified polyphenylene sulfide and polytetrafluoroethylene sewing thread for high-temperature filtration

Huang

Zhang

Alassod

et al. 2021

Textile Research Journal

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High-temperature filtration is a promising development in particle collection technology. In this field, the filtration efficiency of the filter bag is affected by the surface hairiness of the sewing thread, which has the function of sealing pinholes. A high-performance modified polyphenylene sulfide (MPPS) and polytetrafluoroethylene (PTFE) sewing thread had been prepared. However, the effect of the addition of MPPS fibers on acid resistance of MPPS/PTFE sewing thread was a crucial issue that was still unknown. In this study, surface morphology, tensile properties, and the corrosion mechanism of MPPS/PTFE sewing thread exposed to sulfuric acid (H2SO4) solution was investigated under different temperatures, concentrations, and times. It was noticed that the auxiliary agent on the surface of MPPS/PTFE sewing thread was partly removed. Besides, the surface of MPPS fibers was slightly damaged by H2SO4 solution. Moreover, the tensile properties showed that the maximum loss of fracture strength and the maximum deviation of elongation at break of MPPS/PTFE sewing thread were around 9.1% and 4.6%, respectively. Hence, it could be concluded that the addition of MPPS fibers had little effect on MPPS/PTFE sewing thread. Furthermore, when the concentration of H2SO4 solution did not exceed 10 mol/L, MPPS/PTFE sewing thread showed a good acid resistance. Fourier transform infrared spectroscopy analysis did not show a change in the structure of the benzene ring skeleton of the macromolecular chain in MPPS/PTFE sewing thread after treatment with H2SO4 solution. In contrast, the carbon–sulfur bonds attached to the benzene ring in MPPS/PTFE sewing thread had rotated or even partially broken. Thermogravimetric analysis and differential scanning calorimetry measurements revealed that the thermal stability of MPPS/PTFE sewing thread was slightly decreased.

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“…1,2 Therefore, it was necessary to filter the high-temperature fume using a bag dust collector, usually used in high-temperature dust removal, which that had high efficiency of dust removal, [3][4][5] low influence by the combustion of boiler and dust characteristics, high-temperature resistance and stable operation. [6][7][8] The filter bag was the core component of the bag dust collector, which was mainly composed of high-temperature resistant filter material and sewing thread. 9,10 Therefore, the filtration efficiency of the bag dust collector mainly depended on the type, diameter and molding method of fibers in the filter materials and sewing threads, and the size of gaps and holes in the filter bags.…”

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confidence: 99%

Effects of alkali solution on the durability of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

Huang

Zhang

Alassod

et al. 2020

Textile Research Journal

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The alkali resistance of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene (MPPS/PTFE) has a crucial influence when used in the field of filtering high-temperature dusty gas. Therefore, the effects of alkali (NaOH) solution on the properties of MPPS/PTFE sewing thread at different temperatures, different concentrations and different times were studied. The results showed that white particulate matter and bump materials appeared on the surface of MPPS fibers in the MPPS/PTFE sewing thread. The maximum strength loss of MPPS/PTFE sewing thread was around 12.9% and the maximum deviation of elongation at break was about 4.5% after treatment with NaOH solution at a temperature of 25℃ and a concentration of 2 mol/L for 120 h. By analysis, it could be concluded that the structure of the benzene ring skeleton of the macromolecular chain in the MPPS/PTFE sewing thread did not change after treatment with NaOH solution, but the C-S bonds attached to the benzene ring in the MPPS/PTFE sewing thread had rotated, or even broken, which could be confirmed by the curves of Fourier transform infrared spectroscopy. The thermal stability of MPPS/PTFE sewing thread was decreased after treatment with NaOH solution, which was caused by surface damage of MPPS fibers in the MPPS/PTFE sewing thread.

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Structure and properties of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

Cited by 6 publications

References 18 publications

Features and Consequences of Isopropanol Burning off PTFE–rGO Aerogels

Features and Consequences of Isopropanol Burning off PTFE–rGO Aerogels

Influence of sulfuric acid solution on the durability of high-performance modified polyphenylene sulfide and polytetrafluoroethylene sewing thread for high-temperature filtration

Effects of alkali solution on the durability of sewing thread made of modified polyphenylene sulfide and polytetrafluoroethylene

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